Thanks for your reply.
Ya, I was missing jstl.jar:(
I have added jstl.jar in my WEB-INF/lib directory now
Location of my c.tld is WEB-INF/lib/jstl.jar/META-INF/c.tld
Now, I am confused what would I add in web.xml
<taglib>
<taglib-uri>
http://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>WEB-INF/lib/jstl.jar/META-INF/c.tld</taglib-location>
</taglib>
This does not work...